12565124203 has 4 divisors (see below), whose sum is σ = 12655520920. Its totient is φ = 12474727488.

The previous prime is 12565124179. The next prime is 12565124233. The reversal of 12565124203 is 30242156521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30242156521 = 421 ⋅71834101.

It is a cyclic number.

It is not a de Polignac number, because 12565124203 - 2²¹ = 12563027051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12565124233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45198150 + ... + 45198427.

It is an arithmetic number, because the mean of its divisors is an integer number (3163880230).

Almost surely, 2^12565124203 is an apocalyptic number.

12565124203 is a deficient number, since it is larger than the sum of its proper divisors (90396717).

12565124203 is an equidigital number, since it uses as much as digits as its factorization.

12565124203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90396716.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 12565124203 in words is "twelve billion, five hundred sixty-five million, one hundred twenty-four thousand, two hundred three".